High-capacity 21.6V 4000mAh lithium-ion battery pack engineered for Dreame H11/H12 Max vacuum models. Premium-grade 18650 cells ensure stable voltage output and extended runtime up to 45 minutes per charge.

Precision-molded ABS casing with shock-resistant structure protects internal circuits from drops or impacts. Integrated PCB features overcharge/overcurrent protection for enhanced safety during prolonged use.

Direct plug-and-play compatibility maintains original equipment performance without power loss. Ideal for households with large floor areas or commercial cleaning services requiring uninterrupted operation.

Custom-fitted contacts and ergonomic latch mechanism ensure secure attachment to vacuum base. UL-certified cells deliver 500+ charge cycles while maintaining 80% capacity retention.

Includes built-in LED power indicator for real-time charge monitoring. Bulk order discounts available for cleaning service companies or hardware distributors.